Wiper Motor Power Source Circuit: Procedure

1. Remove the WIP fuse from the instrument panel J/B.
2. Measure the resistance of the fuse.

   Standard resistance

   Below 1 Ω

NG → REPLACE FUSE 

OK: Go to next step 

Fig 1: Inspecting IG1 Relay

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1. Remove the IG1 relay from the instrument panel J/B.
2. Measure the resistance of the relay.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   3 - 5	Always	10 kΩ or higher
   	When battery voltage is applied to terminals 1 and 2	Below 1 Ω

NG → REPLACE IG1 RELAY 

OK: Go to next step 

1. Disconnect the A50 windshield wiper motor assembly connector.
   Fig 2: Identifying A50 Windshield Wiper Motor Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Condition	Specified Condition
   A50-2 (B) - Body ground	Engine switch on (IG)	10 to 14 V

3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   A50-4 (E) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE